Matching pre-amp for Bryston power amp

There are a number of tubed preamps that would fit the bill but don't discount a Bryston preamp. The BP-20 doesn't have a remote so you would have to look at the BP-25 or newly released BP-26 (guts are the same as the BP-25 but it has a new face plate and matching upgraded power supply, check Bryston website for details). I owned a BP-25 with my 4B-ST and I have owned both Rogue Magnums (66 & 99) with a 4BST & 4B-SST as well as a Hovland with my 14B-SST preferring to have a little "warmth" that some tube designs can provide but then thats just my desired outcome. But seeing as you already have a tubed dac then its quite possible that the BP-25 or 26 for that matter might be the ticket. Bryston preamps are dead nuts neutral (IMHO) and are very revealing of upstream components. Don't be afraid to try one out and sometimes they can be found quite cheap right here...

And the innards of the 20 are the same as those of the 25. The only difference is no remote on the 20

Am using an Audible Illusions Modulus 3A (current model) with a Bryston 2B-LP and it sounds just fine. The Bryston never sounded better.